The viaduct of Morlaix, an arch bridge built 1863, as part of the Paris-Brest railway line. It is designed as a towering double-decker arch bridge. The design features 14 arches, each spanning 15 meters, and the bridge itself is over 290 meters long. Standing at approximately 62 meters high, the Morlaix Viaduct was constructed using local granite, which gives it a distinctive appearance and ensures its durability. The upper deck of the viaduct carries the railway track.

The Paris-Brest railway line is a major French railway line that connects Paris, the capital city, and Brest, a port city in Brittany. This line is historically significant as it was one of the longest railway lines in France when it was completed in the 19th century. It plays a vital role in connecting the western part of France to the capital, facilitating both passenger and freight transport. The line is known for its scenic beauty, especially as it passes through the picturesque regions of Brittany and Normandy. It has undergone various upgrades and modernizations over the years to improve efficiency and speed. Today the viaduct of Morlaix still serves the SNCF (French railway operator)